Dryout point prediction model for bilaterally heated vertical narrow annuli under low flow conditions

  • Aye Myint
  • , Wenxi Tian
  • , Zhihui Li
  • , Li Hao
  • , Dounan Jia

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Prediction of dryout point was experimentally investigated with deionized water upflowing through narrow annular channel with 1.0 mm and 1.5 mm gap respectively. The annular with narrow gap was bilaterally heated by AC current power supply. The experimental conditions covered a range of pressure from 0.8 to 3.5 MPa, mass flux of 60.39 to 135.6 kg/m2 and heat flux of 5 to 50 kW/m2 This paper presents a new analytical model for the prediction of dryout point for steam- water flow in narrow annular gap and bilaterally and uniformly heated tubes. The prediction of dryout point for bilaterally heated annuli was based on the droplet-diffusion model for internally heated annuli by Kirillov and Smogalev (1969, 1972). The dryout model prediction values are compared with a experimental data, showing a good agreement in accuracy for the above mentioned parametric range.

Original languageEnglish
Title of host publication25th Annual CNS Conference - Nuclear Energy
Subtitle of host publicationMeeting the Challenges
Pages361-370
Number of pages10
StatePublished - 2004
Event25th Annual CNS Conference - Nuclear Energy: Meeting the Challenges - Toronto, Ont., Canada
Duration: 6 Jun 20049 Jun 2004

Publication series

NameAnnual Canadian Nuclear Society Conference

Conference

Conference25th Annual CNS Conference - Nuclear Energy: Meeting the Challenges
Country/TerritoryCanada
CityToronto, Ont.
Period6/06/049/06/04

Keywords

  • Annular flow
  • Bilaterally heating
  • Critical quality
  • Dryout point
  • Narrow annuli

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